Thanks that helps a lot. I will look for "Chunk Light Tuna"....although at the moment I don't know how that is different from other tuna, I am sure I will see it on the shelf.

Chunk light tuna is harvested at an earlier age than albacore (those are two canned tuna, commonly), and chunk light has about 33% the mercury content of albacore. I believe chunk light has .12 parts per million mercury, while albacore is .35 PPM. That information is from the source listed below.

Yeah these threads are getting out of hand. I would really like to know the answer to this, since I've heard that unless you're a women that's pregnant don't worry about mercury poisoning - and that's only with like shark, swordfish, etc. I mean it's not that big a deal I'll drop my albacore and just stick to chunk light, but whatever.